CBL — Sorghum bicolor

Summary

SORBI_3001G357300, also known as SbCBL, SbCGS1 or SbMTO1 on sorghum chromosome 1, encodes a pyridoxal phosphate-dependent enzyme with cystathionine gamma-synthase, cysteine-S-conjugate beta-lyase, mimosinase and carbon-sulfur lyase activities. The gene is associated with transsulfuration, de novo L-methionine biosynthesis, selenium metabolism, cellulose biosynthesis, homeostasis and signal transduction. Its product localizes to the chloroplast stroma and cytoplasm. SbCBL is associated with salinity tolerance. Studies of related genes in other species connect the family to methionine accumulation, ethionine resistance, salt, cold, drought and heavy metal stress tolerance, hypersensitive cell death, selenium volatilization, and seed germination under osmotic and salt stress. Research in maize further links the family to salt stress tolerance, while related genes in other species are associated with grain yield, seed protein content, starch content, and stripe rust resistance.